What kind of wine are you going to make? If it is Xiaoqu-flavor distiller's grains, just distiller's grains with koji don't need to be added, and then cover distiller's grains without koji or mother's grains on the back of the stacking box for insulation and saccharification for about 24 hours. According to the age and tenderness of the box, it is decided to enter the cellar for fermentation. At this time, it must be spread quickly, and the grain saccharified with distiller's grains must be mixed evenly, although distiller's grains do not need to be added separately. But there is still residual starch in it. After mixing, the residual lake inside can be fermented and put into the cellar at low temperature, which is beneficial to the wine yield and mellow, sweet, soft and clean wine quality. If it is winter, the piled boxes are thicker. If Daqu is rich or fragrant, and then steamed and mixed, Daqu can be directly added to grain and mixed with distiller's grains evenly, or mixed first and then added. If the fermentation time is long, the acidity of fermented grains is relatively high. Then sprinkle the koji on the fermented grains separately, and then mix the fermented grains. If the fermentation time of mother distiller's grains is short, the acidity is low, and the wine quality is slightly weak, the distiller's grains are used to mix grain and then sprinkle koji. In fact, the more important purpose of blending is to adjust a series of parameters such as into the pit coefficient, acidity, moisture and starch. And acidity is also beneficial to the production of esters and flavors. The quality of whole grain is higher than that of non-grain, followed by the role of grain input. Because, after all, the residue in fermented distiller's grains is not very high, that is, about 8-9%, and there is fake starch that cannot be completely converted into wine. To sum up, poor collocation is more for good wine quality. But if Daqu is fragrant, there is no need to mix it badly, because the disadvantage of poor matching is that it will bring miscellaneous flavor to the wine. It needs to be fragrant, clean and pure. If you drink two cups, it's gone. It's all gone. However, the requirements for entering the tank are stronger than Daqu incense and steamed incense.